Members of the Rail, Maritime and Transport (RMT) union will stage a walk-out on the Jubilee, Northern and Piccadilly lines from 6am on Friday until 6am on Saturday in a row over pensions and benefits.

The union claims workers for Tube Lines, which maintains the network, should have had their pensions and benefits brought level with existing Transport for London (TfL) staff when the two merged in 2003.